/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:54:56,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:54:56,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:54:56,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:54:56,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:54:56,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:54:56,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:54:56,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:54:56,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:54:56,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:54:56,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:54:56,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:54:56,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:54:56,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:54:56,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:54:56,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:54:56,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:54:56,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:54:56,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:54:56,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:54:56,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:54:56,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:54:56,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:54:56,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:54:56,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:54:56,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:54:56,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:54:56,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:54:56,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:54:56,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:54:56,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:54:56,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:54:56,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:54:56,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:54:56,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:54:56,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:54:56,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:54:56,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:54:56,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:54:56,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:54:56,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:54:56,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:54:56,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:54:56,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:54:56,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:54:56,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:54:56,329 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:54:56,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:54:56,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:54:56,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:54:56,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:54:56,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:54:56,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:54:56,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:54:56,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:54:56,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:54:56,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:54:56,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:54:56,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:54:56,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:54:56,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:54:56,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:54:56,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:54:56,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:56,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:54:56,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:54:56,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:54:56,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:54:56,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:54:56,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:54:56,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:54:56,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:54:56,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:54:56,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:54:56,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:54:56,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:54:56,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:54:56,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 00:54:56,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb3e212d/16941c440f514362b241fccf6f567f34/FLAG753f239ff [2020-09-25 00:54:57,482 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:54:57,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 00:54:57,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb3e212d/16941c440f514362b241fccf6f567f34/FLAG753f239ff [2020-09-25 00:54:57,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb3e212d/16941c440f514362b241fccf6f567f34 [2020-09-25 00:54:57,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:54:57,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:54:57,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:57,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:54:57,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:54:57,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:57" (1/1) ... [2020-09-25 00:54:57,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:57, skipping insertion in model container [2020-09-25 00:54:57,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:57" (1/1) ... [2020-09-25 00:54:57,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:54:57,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:54:58,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:58,107 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:54:58,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:58,138 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:54:58,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58 WrapperNode [2020-09-25 00:54:58,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:58,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:54:58,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:54:58,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:54:58,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... [2020-09-25 00:54:58,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:54:58,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:54:58,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:54:58,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:54:58,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:58,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:54:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:54:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 00:54:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:54:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:54:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:54:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 00:54:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:54:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:54:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:54:58,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:54:58,566 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:54:58,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:58 BoogieIcfgContainer [2020-09-25 00:54:58,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:54:58,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:54:58,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:54:58,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:54:58,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:54:57" (1/3) ... [2020-09-25 00:54:58,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:58, skipping insertion in model container [2020-09-25 00:54:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:58" (2/3) ... [2020-09-25 00:54:58,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e01822e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:58, skipping insertion in model container [2020-09-25 00:54:58,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:58" (3/3) ... [2020-09-25 00:54:58,601 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-25 00:54:58,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:54:58,643 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:54:58,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:54:58,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:54:58,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:54:58,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:54:58,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:54:58,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:54:58,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:54:58,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:54:58,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:54:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 00:54:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:54:58,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:58,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:58,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 00:54:58,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:58,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978304749] [2020-09-25 00:54:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:59,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:54:59,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 00:54:59,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:54:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:54:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:59,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 00:54:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:59,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:59,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978304749] [2020-09-25 00:54:59,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:59,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:59,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598813856] [2020-09-25 00:54:59,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:59,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:59,387 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 00:54:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:59,504 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 00:54:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:59,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:54:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:59,520 INFO L225 Difference]: With dead ends: 37 [2020-09-25 00:54:59,520 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 00:54:59,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 00:54:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 00:54:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 00:54:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 00:54:59,579 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 00:54:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:59,580 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 00:54:59,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 00:54:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 00:54:59,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:59,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:59,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:54:59,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:59,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:59,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 00:54:59,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:59,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314064220] [2020-09-25 00:54:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:55:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 00:55:00,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:55:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:55:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:00,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:55:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 00:55:00,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:55:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:55:00,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314064220] [2020-09-25 00:55:00,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:00,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:55:00,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494769774] [2020-09-25 00:55:00,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:55:00,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:00,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:55:00,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:55:00,208 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 00:55:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:00,282 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 00:55:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:55:00,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 00:55:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:00,284 INFO L225 Difference]: With dead ends: 34 [2020-09-25 00:55:00,285 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:55:00,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:55:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:55:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:55:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 00:55:00,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 00:55:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:00,300 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 00:55:00,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:55:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 00:55:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 00:55:00,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:00,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:00,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:55:00,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 00:55:00,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:00,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207235308] [2020-09-25 00:55:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:55:00,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:00,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 00:55:00,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 00:55:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:55:00,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:00,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 00:55:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 00:55:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:55:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:01,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:55:01,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207235308] [2020-09-25 00:55:01,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:01,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:01,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584766265] [2020-09-25 00:55:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:01,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:01,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:01,176 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 00:55:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:01,271 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 00:55:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:55:01,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 00:55:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:01,274 INFO L225 Difference]: With dead ends: 39 [2020-09-25 00:55:01,274 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 00:55:01,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:55:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 00:55:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 00:55:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 00:55:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 00:55:01,288 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 00:55:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:01,288 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 00:55:01,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 00:55:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 00:55:01,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:01,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:01,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:55:01,293 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 00:55:01,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:01,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099263971] [2020-09-25 00:55:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:55:02,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-25 00:55:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 00:55:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:55:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 00:55:02,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:02,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:02,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 00:55:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:02,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 00:55:02,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:02,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:55:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 00:55:02,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099263971] [2020-09-25 00:55:02,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:02,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:55:02,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773093085] [2020-09-25 00:55:02,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:55:02,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:02,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:55:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:02,696 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 00:55:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:02,791 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 00:55:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:55:02,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 00:55:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:02,794 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:55:02,794 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 00:55:02,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:55:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 00:55:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 00:55:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:55:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 00:55:02,802 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 00:55:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:02,803 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 00:55:02,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:55:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 00:55:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 00:55:02,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:02,805 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:02,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:55:02,806 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:02,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:02,806 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 00:55:02,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:02,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429754484] [2020-09-25 00:55:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:55:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-09-25 00:55:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 00:55:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 00:55:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:04,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:04,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 00:55:04,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 00:55:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:04,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:04,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 00:55:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:04,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 00:55:04,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:04,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:04,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:55:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 00:55:04,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429754484] [2020-09-25 00:55:04,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:04,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:55:04,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317732736] [2020-09-25 00:55:04,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:55:04,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:04,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:55:04,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:04,928 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 00:55:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:05,042 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 00:55:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:55:05,042 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 00:55:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:05,044 INFO L225 Difference]: With dead ends: 49 [2020-09-25 00:55:05,044 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 00:55:05,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:55:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 00:55:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 00:55:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 00:55:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 00:55:05,053 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 00:55:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:05,053 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 00:55:05,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:55:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 00:55:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 00:55:05,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:05,055 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:05,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:55:05,056 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 00:55:05,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:05,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657245008] [2020-09-25 00:55:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 00:55:07,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-09-25 00:55:07,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:55:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 00:55:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:55:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 00:55:07,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:07,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 00:55:07,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:07,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 00:55:07,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:08,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:08,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 00:55:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:08,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:08,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:55:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 00:55:08,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657245008] [2020-09-25 00:55:08,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:08,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:55:08,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103602646] [2020-09-25 00:55:08,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:55:08,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:08,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:55:08,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:55:08,130 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 00:55:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:08,266 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 00:55:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:55:08,266 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 00:55:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:08,268 INFO L225 Difference]: With dead ends: 54 [2020-09-25 00:55:08,268 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:55:08,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:55:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:55:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 00:55:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 00:55:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 00:55:08,276 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 00:55:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:08,277 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 00:55:08,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:55:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 00:55:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 00:55:08,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:08,278 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:08,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:55:08,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:08,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 00:55:08,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:08,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413278097] [2020-09-25 00:55:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 00:55:11,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2774 [2020-09-25 00:55:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 00:55:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 00:55:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:55:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 00:55:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 00:55:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 00:55:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 00:55:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:12,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 00:55:12,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:12,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:12,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 00:55:12,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:55:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 00:55:12,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413278097] [2020-09-25 00:55:12,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:12,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:55:12,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549179261] [2020-09-25 00:55:12,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:55:12,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:55:12,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:55:12,243 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 00:55:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:12,406 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 00:55:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 00:55:12,407 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 00:55:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:12,409 INFO L225 Difference]: With dead ends: 59 [2020-09-25 00:55:12,409 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 00:55:12,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 00:55:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 00:55:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 00:55:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:55:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 00:55:12,417 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 00:55:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:12,417 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 00:55:12,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:55:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 00:55:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 00:55:12,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:12,419 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:12,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:55:12,420 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:12,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 00:55:12,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:12,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992225437] [2020-09-25 00:55:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 00:55:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3629 [2020-09-25 00:55:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:55:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 00:55:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:16,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:16,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 00:55:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 00:55:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:55:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 00:55:16,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 00:55:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:17,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:17,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 00:55:17,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 00:55:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:17,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:55:17,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:17,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:55:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 00:55:17,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992225437] [2020-09-25 00:55:17,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:17,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:55:17,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409815015] [2020-09-25 00:55:17,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:55:17,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:55:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:55:17,528 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 00:55:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:17,694 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 00:55:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:55:17,694 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 00:55:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:17,696 INFO L225 Difference]: With dead ends: 64 [2020-09-25 00:55:17,696 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 00:55:17,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:55:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 00:55:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 00:55:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:55:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 00:55:17,704 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 00:55:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:17,704 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 00:55:17,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:55:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 00:55:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 00:55:17,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:17,706 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:17,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:55:17,707 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 00:55:17,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:17,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613406479] [2020-09-25 00:55:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4490 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 00:55:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:55:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:55:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:23,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 00:55:23,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:23,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:23,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 00:55:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:23,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:23,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 00:55:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:23,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 00:55:23,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:23,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:23,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 00:55:23,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613406479] [2020-09-25 00:55:23,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:23,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:55:23,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428559958] [2020-09-25 00:55:23,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:55:23,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:55:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:55:23,942 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 00:55:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:24,124 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 00:55:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:55:24,125 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 00:55:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:24,126 INFO L225 Difference]: With dead ends: 69 [2020-09-25 00:55:24,126 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 00:55:24,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 00:55:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 00:55:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 00:55:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 00:55:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 00:55:24,141 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 00:55:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:24,141 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 00:55:24,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:55:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 00:55:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 00:55:24,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:24,144 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:24,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:55:24,145 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 00:55:24,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:24,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630903639] [2020-09-25 00:55:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:55:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:29,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:29,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 00:55:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:55:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 00:55:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:55:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:30,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 00:55:30,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 00:55:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:55:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:30,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:30,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:30,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:31,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:31,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 00:55:31,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:31,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:55:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 00:55:31,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630903639] [2020-09-25 00:55:31,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:31,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 00:55:31,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862214206] [2020-09-25 00:55:31,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 00:55:31,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:31,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 00:55:31,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:55:31,601 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 00:55:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:31,878 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 00:55:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 00:55:31,879 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 00:55:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:31,880 INFO L225 Difference]: With dead ends: 74 [2020-09-25 00:55:31,880 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 00:55:31,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 00:55:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 00:55:31,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 00:55:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 00:55:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 00:55:31,888 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 00:55:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:31,888 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 00:55:31,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 00:55:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 00:55:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 00:55:31,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:31,889 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:31,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:55:31,890 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:31,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 00:55:31,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:31,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42635579] [2020-09-25 00:55:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 00:55:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:36,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:36,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:37,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:37,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 00:55:37,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-09-25 00:55:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 00:55:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 00:55:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 00:55:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:55:38,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:38,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 00:55:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:55:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:38,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:38,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:55:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:38,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 00:55:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:38,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:38,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:39,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 00:55:39,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:55:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:39,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:55:39,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 00:55:39,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42635579] [2020-09-25 00:55:39,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:39,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 00:55:39,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517461414] [2020-09-25 00:55:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 00:55:39,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 00:55:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:55:39,683 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 00:55:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:39,942 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 00:55:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 00:55:39,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 00:55:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:39,944 INFO L225 Difference]: With dead ends: 79 [2020-09-25 00:55:39,944 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 00:55:39,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 00:55:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 00:55:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 00:55:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 00:55:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 00:55:39,952 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 00:55:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:39,953 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 00:55:39,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 00:55:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 00:55:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 00:55:39,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:39,954 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:39,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:55:39,954 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:39,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 00:55:39,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:39,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328097386] [2020-09-25 00:55:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:44,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 00:55:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:45,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:55:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 00:55:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 00:55:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 00:55:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:46,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:46,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 00:55:46,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-25 00:55:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:55:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 00:55:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:55:47,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 00:55:47,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 00:55:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 00:55:47,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 00:55:47,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 00:55:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 00:55:47,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:55:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:47,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:47,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 00:55:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:55:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:55:48,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 00:55:48,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 00:55:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:55:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 00:55:48,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:55:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:55:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 00:55:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:55:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:55:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:55:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 00:55:48,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328097386] [2020-09-25 00:55:48,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:48,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 00:55:48,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490143715] [2020-09-25 00:55:48,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 00:55:48,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:48,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 00:55:48,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:55:48,594 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 00:55:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:48,854 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 00:55:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 00:55:48,855 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 00:55:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:48,857 INFO L225 Difference]: With dead ends: 84 [2020-09-25 00:55:48,857 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 00:55:48,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 00:55:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 00:55:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 00:55:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 00:55:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 00:55:48,865 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 00:55:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:48,865 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 00:55:48,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 00:55:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 00:55:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 00:55:48,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:48,867 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:48,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 00:55:48,867 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 00:55:48,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:48,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202488523] [2020-09-25 00:55:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking...